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- Add UV Sphere now aligns with view, as do all primitives
- Small drawing error in edges between blender areas (black lines were 2
pixels too short)
- Replaced the heuristics in opening sublevel menus, to be less frustrating.
It now keeps sublevel open while mouse moves within the triangle defined
by original mouse location (before moving) and the closest vertical edge
of the new sub menu. Works nice for toolbox and pulldowns.
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- removed rule restricting to co-planar fgons; isn't useful anyway. Now
allows to fgonize the entire surface of a tube :)
- Hide/Reveil fgons cleared fgon flags
- Reveil ended with wrong selection status for verts/edges... solved with
correctly using EM_select_edge and EM_select_face
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- added undo-push for CTRL+click add vertex Mesh editmode
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- Added proper edgeflag test for knife
- Fixed error in 'make face' for cases I again didn't foresee (ordering
of vertices can be any, need to try 3 cases before rejecting)
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borkened this... )
- Improved rule for adding face (FKEY); it now checks first for existance
of 4 connected edges, if that exists a face is created anyway, otherwise
it does the convex test. Alexander correctly noted that for subsurfs
non-convex quads should be allowed anyway. Hope this rule satisfies it.
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- The function "convex()" in editmesh_lib() actually did not deliver
a proper test for convex at all. It was checking only if a quad could
be subdivided into 2 trias. Code for adding face (FKEY) used this
call in total confusing manner. That code was there in 1.40 already,
cannot find any clue what it was supposed todo... :)
Recoded convex() to deliver a proper test. FKEY will give warning on
attempt to make convex faces now.
- Added undo-free for editmode undo on file load
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Mesh editmode, 'add face' didn't do an undopush
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- 1702; edge selection should be evaluated properly before adding face
- 1704; crash in separate, two causes here:
- separate didnt make selection flags consistant (needed badly
there because of evil code)
- after adding quad (Fkey) the face was not selected, but its
vertices were... that can give bad bad crashes
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selection already is 2 triangles, it should create a new face but
remove the old triangles. It actually calls the 'ALT+J' command then
(join triangles)
While testing found out more cases where new selection flags were not
properly used (join trias, beauty fill, flip edges, rotate edges)
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"Clear FGon" didn't call essential EM_fgon_flags(), to rebuild the lookup
table codes for polygons. This causes former fgon faces to become
not selectable
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Add edge/face didn't use correct selection code yet.
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when adding first ipo curve position, editmode on the curve shows weird
handles, which solves when adding the next keys though...
Fix is that it sets all handles on zero size now. (is auto-handle, so no
harm done)
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still needs revision on bevel and rotate edge
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actually, adding vertices and edges to displist.
Now the subsurfer gives editvertices a pointer to the subsurfed vertex
location; allowing not only vertices in 'optimal' draw to show correct, but
also gives proper handling of borderselect and lasso for edges. :)
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Just select a bunch of faces (selection should be valid flat poly) and
press FKEY. Works in fact as selection-group optimizing. Nice in solid
drawmode!
Further some small additional fixes in the whole debugging process.
Found old error in loopselect for triangles, subdivision code, and
selection still.
NOTE: subdivide still works on vertex level only.
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- hide flags now save correctly in mesh, to restore after going in/out
editmode
- after an extrude, faces/edges could have wrong select flags
(only in vertex select mode)
- new rule for addfacelist(); this now copies edges too, if an example
is provided. That prevents a lot of awkward code, still testing if it
goes as desired though...
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The changelog is very long... it's on the web too:
http://www.blender3d.org/cms/Mesh_editing_rewrite.425.0.html
EditMesh refactor notes (user)
**** New selection modes
When entering Edit Mode for a Mesh, you now have the choice for three selection modes. These are shown as icons in the 3D header (hotkey is being searched for!).
- Vertex Select
Select vertices as usual, fully compatible with how previous version work
- Edge Select
Vertices are not drawn anymore, and selections happen by default on the edges. It is a true edge select, meaning that you can select three out of four edges in a face, without automatic having the 4th edge selected.
- Face Select
Instead of vertices, now selection 'points' are drawn in the face centers. Selected faces also get a colored outline, like for edges. This also is true face select, for each face individual regardless selection status of its vertices or edges.
While holding SHIFT, and press a selection mode, you can also combine the above choices. Now selection becomes mixed, and will behave as expected.
For example; in Edge+Face select mode, selecting the 4 edges of a face will select the face too.
The selection modes and optional drawing modes (like transparant faces, normals, or solid drawing) all work together. All of Blender's mesh editing tools now react to the correct selection mode as well.
Most noticeable it's in:
**** Extrude
Extruding in Edge or Face Select mode allows much more precise control over what's extruded and what should be excluded. Try for example a checker pattern selection, and extrude it.
New is the fixed translation when faces are extruded. This always follows the (averaged) face normal(s) of the old face(s), enabling much easier working in 3D views . A single 'G' (Grab) or 'R' (Rotate) or 'S' (Scale) will change transform modus as usual.
**** Other things to note
- Hiding edges/faces will also behave different based on Select Mode.
- while editing, normals of faces are updated always now
- Border select (BKEY) has 2 different rules for edges; when one edge is fully inside of the border, it will only select edges that are fully inside. Otherwise it selects each edge intersecting with the border.
- in face mode, adding vertices, edges or a circle is invisible...
- "Add monkey" now works as a normal primitive (rotated and on 3d cursor)
- Mesh undo was fully recoded, hopefully solving issues now with Vertex Keys and Groups
- Going in and out of editmode was fully recoded. Especially on larger models you'll notice substantial speed gain.
**** Todo
Add 'FaceSelect mode' functionality in EditMode, including zbuffered selection, display and editing of UV texture.
EditMesh refactor notes (coder)
**** Usage of flags in general
The "->f" flags are reserved for the editmesh.c and editmesh_lib.c core functions. Actually only selection status is there now.
The "->f1" and "->f2" flags are free to use. They're available in vertex/edge/face structs. Since they're free, check carefully when calling other functions that use these flags... for example extrude() or subdivide() use them.
**** Selection flags
EditVert: eve->f & SELECT
EditEdge: eed->f & SELECT
EditFace: efa->f & SELECT
- Selection is only possible when not-hidden!
- Selection flags are always up-to-date, BUT:
if selection mode >= SELECT_EDGE vertex selection flags can be incorrect
if selection mode == SELECT_FACE vertex/edge selection flags can be incorrect
This because of shared vertices or edges.
- use for selecting vertices:
eve->f &= SELECT
- use for selecting edges always:
void EM_select_edge(eed, 1) // 1 = select, 0 = deselect
- use for selecting faces always:
void EM_select_face(efa, 1) // 1 = select, 0 = deselect
- To set the 'f' flags in all of the data:
void EM_set_flag_all(int flag);
void EM_clear_flag_all(int flag);
- the old faceselectedOR() and faceselectedAND() are still there, but only
to be used for evaluating its vertices
**** Code hints for handling selection
If the selectmode is 'face'; vertex or edge selections need to be flushed upward. Same is true for 'edge' selection mode. This means that you'll have to keep track of all selections while coding... selecting the four vertices in a face doesn't automatically select the face anymore.
However, by using the above calls, at least selections flush downward (to vertex level). You then can call:
void EM_selectmode_flush(void);
Which flushes selections back upward, based on the selectmode setting. This function does the following:
- if selectmode 'vertex': select edges/faces based on its selected vertices
- if selectmode 'edge': select faces based its selected edges
This works fine in nice controlled situations.
However, only changing the vertex selections then still doesn't select a face in face mode! If you really can't avoid only working with vertex selections, you can use this call:
void EM_select_flush(void);
Now selection is flushed upward regardless current selectmode. That can be destructive for special cases however, like checkerboard selected faces. So use this only when you know everything else was deselected (or deselect it). Example: adding primitives.
**** Hide flags
EditVert: eve->h
EditEdge: eed->h
EditFace: efa->h
- all hide flags are always up-to-date
- hidden vertices/edges/faces are always deselected. so when you operate on selection only, there's no need to check for hide flag.
**** Unified undo for editmode
New file: editmode_undo.h
A pretty nice function pointer handler style undo. Just code three functions, and your undo will fly! The c file has a good reference.
Also note that the old undo system has been replaced. It currently uses minimal dependencies on Meshes themselves (no abuse of going in/out editmode), and is restricted nicely to editmode functions.
**** Going in/out editmode
As speedup now all vertices/faces/edges are allocated in three big chunks. In vertices/faces/edges now tags are set to denote such data cannot be freed.
ALso the hashtable (lookup) for edges uses no mallocs at all anymore, but is part of the EditEdge itself.
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logical parts, and include files altered to denote internal and external
functions.
include/editmesh.h: internal calls for editmesh_xxx.c files
include/BIF_editmesh.h: external calls for these files
src/editmesh.c: basic alloc/lists and in/out editmode, undo, separate
src/editmesh_lib.c: basic utility calls for all editmesh_xxx.c (no UI)
src/editmesh_add.c: add prim, add duplicate, add vertex/edge/face (UI)
src/editmesh_mods.c: selecting, transforming (UI)
src/editmesh_loop.c: loop tools like knife, loop select, loop subdiv (UI)
src/editmesh_tools.c: other tools (extrude, spin, etc) (UI)
And a new file:
src/meshtools.c: tools for Mesh outside of editmode (normals, draw flags)
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